FFXIV Gil can be the method that a Trojan is installed on your machine. The possibilities for this attack are plentiful so you want to go through the various ways it can happen. Most of the time virus protection blocks it when an attacker wants to get a Trojan/Root kit on your machine. So what the attacker will do is write a program that will cause your machine to get into a continuous loop.
It depending on what the attacker is trying to do they can strategically pick a Memory bank that is being used by say, your Virus protection? They create data and send it to that particular memory bank at speeds that will cause your computer to appear to freeze up until programs start to crash. Now if they did it specifically to one purpose the program that is causing the DoS then sees that its tasks have been successful in the help of FFXIV Gold.
Now it can load the Trojan onto your machine without worry that the virus protection will block it. It can do very bad things at this point for your computer is still in a hung state and the Trojan is loaded. It stops jamming the memory bank and allows the attacker to get in. This is just one of the MANY strategies that are used with FF14 Gil.